Results of crack-arrest tests on two irradiated high-copper welds

Technical Report · Sat Dec 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6152342· OSTI ID:6152342

Iskander, S K; Corwin, W R; Nanstead, R K ^[1]

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1. Oak Ridge National Lab., TN (USA)

The objective of this study was to determine the effect of neutron irradiation on the shift and shape of the lower-bound curve to crack-arrest data. Two submerged-arc welds with copper contents of 0.23 and 0.31 wt % were commercially fabricated in 220-mm-thick plate. Crack-arrest specimens fabricated from these welds were irradiated at a nominal temperature of 288{degree}C to an average fluence of 1.9 {times} 10{sup 19} neutrons/cm{sup 2} (>1 MeV). Evaluation of the results shows that the neutron-irradiation-induced crack-arrest toughness temperature shift is about the same as the Charpy V-notch impact temperature shift at the 41-J energy level. The shape of the lower-bound curves (for the range of test temperatures covered) did not seem to have been altered by irradiation compared to those of the ASME K{sub Ia} curve. 9 refs., 21 figs., 10 tabs.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (USA). Div. of Engineering; Oak Ridge National Lab., TN (USA)
• Sponsoring Organization: NRC
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6152342
• Report Number(s): NUREG/CR-5584; ORNL/TM--11575; ON: TI91005857
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
ARC WELDING
CARBON STEELS
COPPER
CRACK PROPAGATION
ELEMENTS
EMBRITTLEMENT
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
IRRADIATION
JOINING
JOINTS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STEEL-ASTM-A533-B
STEELS
SUBMERGED ARC WELDING
TRANSITION ELEMENTS
WELDED JOINTS
WELDING